$\left(x-ycos\left(\frac{y}{x}\right)\right)dx+xcos\left(\frac{y}{x}\right)dy=0$

$\int\frac{2x^2}{x-3}dx$

$a^3b^3c-abc^3+a^3bc^3-ab^3c$

$2+8-1$

$\lim_{x\to\infty}\left(t^{\frac{2}{3}}\right)$

$\lim_{x\to0}\left(\frac{sin\left(6x\right)itan\left(6x\right)}{x^3}\right)$

$4x^2-12x+0$